Galactic chemical evolution: the observational side
Andrew McWilliam (Carnegie Observatories)
TL;DR
This review discusses how elemental abundance ratios in dwarf galaxies and globular clusters inform our understanding of galactic chemical evolution, emphasizing a leaky box model for prolonged enrichment.
Contribution
It provides a qualitative scenario explaining observed abundance ratios in dwarf galaxies and globular clusters, focusing on chemical evolution insights from Local Group systems.
Findings
Abundance ratios reveal prolonged chemical enrichment.
A leaky box model explains observed elemental patterns.
Dwarf galaxies show diverse chemical evolution histories.
Abstract
In this review I outline some ideas in chemical evolution, necessary for understanding the evolution of galaxies from measured elemental abundance ratios. I then discuss abundance results from studies of Local Group dwarf galaxies and the globular cluster Omega Cen. I present a qualitative scenario of prolonged chemical enrichment in a leaky box that can explain the observed abundance ratios in these systems. Space limitations prevent a comprehensive review of this vast field, so I have restricted the discussion to dwarf systems.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astrophysics and Star Formation Studies · Astronomy and Astrophysical Research